Trouble and in



March 12, 1929.

A. C. DE LORME TROUBLE AND INSPECTION LAMP Filed Dec. 27, 1927 FIG. 2

FIG. 4

FIG: 3

[NI/ENTOH ALFRED C. DE'LORME Patented Mar. 12, 1929.

UNITED start i rarest castes.

ALFRED C. DE LOB/ME, 0F MAPLEWOOD, NEW J ASSIGNOR TO NATIONAL ELEC- TRIG CORPORATION, OF NEWARK, NEW JERSEY.

TROUBLE AND INSPECTIGN LAMP.

Application filed December 27, 1927.

This invention relates to a lamp especially useful as a trouble and inspection lamp, around an automotive vehicle.

It happens many times that work must be done on an automotive vehicle, such as changing a tire by an individual person, and when this work is required to be done at night or in darkness, the one individual cannot work and hold a trouble or inspection light at the same time, and the lamp herein described is constructed so that when the connecting wires for lighting the lamp areconnected to the storage battery on the vehicle, thebase of the lamp may be placed against any part of the vehicle constructed of magnetic material, such as a mud-guard, which will act as an armature for an electro-magnet carried in the base of lamp and the lamp will thus stick where it is placed.

It is the principal object of my invention 7 to provide an improved lamp of this character, and one that is strong and substantial, and which will stand the abuse that such a device is apt to get around an automotive vehicle. These improvements will be set forth in the following specification taken in connection with the annexed drawing, wherein Figure 1 is a plan view of the lamp looking down on the top of the guard cover.

Figure 2 is a vertical sectional. view through the lamp showing the lamp bulb in lace. p Figure 3 is a side elevation of the complete lamp. 7

Figure 4 is a view of the lamp bulb socket.

Figure 5 is a diagrammatic view showing the preferred form of making the electrical connections to the lamp and electro-magnet associated therewith.

Figure 6 is a plan view of the preferred form of insulator, and contact carried thereon for making connections with one terminal of the lamp bulb.

Referring now to the details wherein like numbers refer to corresponding parts in the various views, 1 is a cup shaped shell, preferably constructed of non-ferrous or non-magnetic material, such as brass or aluminum. One end of the shell 1, is formed into a re- Hector 2, the central portion of which terminates in a stem or cavity 3, projecting toward the large open end of the shell. The periphery of the shell adjacent the reflector portion 2 is preferably drawn inwardly at 4:, to

Serial No. 242,547.

form a seat for a guard member 5. Preferably the portion 1 is drawn inwardly just sufliciently so that the base of the guard member 5 makes a smooth surface with the outer surface of the shell 1.

The guard member has parts 33, 6, and 7 cut out, to let the light from the bulb 8 pass through the guard. Ribs 9 are formed in the guard when the portions 33, 6 and 7 are re moved, so as to protect the bulb 8 from breakage. One portion 10 of the guard member that is not cut away acts as a reflector in cooperation with the reflector 2. The base portion 5 of the guard member may be provided with any suitable means, such as slight indentations 11 cooperating with depressions in the portion 4 of the shell 1, to hold the guardin position, and at the same time to act as means whereby the guard may be quickly and easily detached from the shell 1, for the purpose of removing the lamp bulb.

lVithin the stem or cavity 3, there is posi tioned an insulator 12, which is used to in sulate the bulb socket 13 from the wall of the stem 3. In the bottom of the stem or cavity 3 is positioned an insulator 1 1-, on which is mounted a spring 15 in any satisfactory manner as by rivets 16. To prevent the rivets 16 from contacting with the bottom of the stem 3, a second disc insulator 17 is used. To make electrical connections with the lamp socket 18, and the contact member 15, openings 18 are punched on opposite sides of the stem 3, as is more clearly shown in Figure 5, one of the connecting wires passing through one of the holes 18, passes through a notch 19in the socket 13 and the bare end of the wire is bent over and passed through a hole 20, and as stranded wire is preferably used for this purpose, the strands of wire are fanned out and held securely in position when the socket 14 is forced into position as shown in Figure 2. The insulator 1 1 is provided with notches 31 and 32 to allow the wires to be brought within the cavity or stem 3 as above described. The socket 13 is provided with the usual bayonet locks 21 to hold the lamp bulb in position.

Within the shell 1 is carried a magnet coil 22, in association with a core structure, which is composed of a central core 23 .and a cup shaped member 24, both of which are preferably held to the bottom of the stem 3 as by a reduced portion 25 of the central core, which passes through a hole in the bottom of the stem 3, and is wedged over on the inside. An insulator 26 is used to protect the coil 22 from contacting with the bottom of the member 24, and another insulator 2'2 is used to protect the outer surface of the coil from injury. Openings 28 are preferably provided on opposite sides of the core structure 24;, for the purpose of bringing out the ends of the coil 22. As is shown in Figure 2, the free or working edges of the core structure comprising the central core portion 23, and shell 24 preferably telminate in the same plane and substantially in the plane of the edge 29 of the shell 1. An insulator 30 of suitable material is forced between the rim 29 of the shell 1, and the member 24 thereby closing up the opening into the outer shell, thus presenting a smooth surface on the base of the lamp, Whereby the same may be placed against any other surface of magnetic material, which then forms a keeper across the central core structure 23 and the edges of the member 2%, thus completing the magnetic circuit and holding the lamp in position.

The coil 22 and lamp bulb S are preferably connected in parallel so as to obtain the full brilliancy of the bulb.

It will be obvious that the various details entering into the construction of my improved lamp may be varied Withoutdeparting from the spirit of my invention or the scope of the appended claims.

Having thus described my invention, What I claim is:

1. In a device of the class described, a cup shaped shell having one end formed into the shape of .a reflector, the central part of the reflector terminating in a stem projecting Within the shell, a lamp bulb socket carried Within the stem but insulated therefrom, an

insulator positioned Within and at the bottom of the stem and carrying a contact to engage a lamp bulb terminal, a centrally disposed member of magnetic material and a co-operating member of magnetic material, both car ried by the stem and extending substantially to the plane of the shell rim for the purpose described, a coil disposed between said menr bers for exciting said magnet members and a lamp guard fitting on the shell adjacent the outer periphery of the reflector portion.

2. In a device of the class described, a cup shaped shell having one end formed into the shape of a reflector, the central part of the reflector terminating in a stem projecting Within the shell, an insulator positioned Within and at the bottom of the stem and carrying a resilient contact to engage a lamp bulb terminal, a metallic lamp bulb socket positioned Within said stem but insulated from its Walls and resting on the bottom insulator, a central magnet core member, a. second magnet member both said members being carried by the stem and extending substantially to the plane of the shell rim, an ention.

3. In a device of the class described a cup shaped shell having one end formed inwardly into a concave light reflecting portion terminating in a circular stem, an insulator positioned in the bottom of the stem and carrying a t leastone lamp engaging contact, a metal lamp socket fitting Within the stem against said insulator and further insulated from the Wall of the stem, a lamp guard fitting onto the shell around the concave portion, a central magnet core member and a cooperating magnet core member both carried by the stem and extending to substantially the plane of the rim of the shell and a coil for energizing said magnet member for the purpose described.

4. In a device of the class described, a cup shaped shell having one end formed inwardly into a concave light reflecting portion terminating in a circular stem, an insulator positioned in the bottom of the stem and carrying at least one lamp engaging contact, a metal lamp socket fitting Within the stem against said insulator and further insulated from the Wall of the stem, a lamp guard fitting onto the shell around the concave portion, a cup shaped member of magnetic material posltioned Within the first mentioned shell and against the end of said stem, a central core member of magnetic material associated with the second mentioned cup shaped member both said members extending to substantially the plane of the outer shell and an energizing coil surrounding said central core member,

5. In a device of the class described an outer shell of non-magnetic material having one end formed into a light reflector and an in- Wardly projecting stem, a lamp socket fitting Within but insulated from the stem, at least one contact carried within the stem on an insulator for contacting with a lamp, a magnet coil and core structure carried Within the shell by the stem, said core structure having its free edges substantially in the same plane substantially the same as that of the rim of said outer shell for the purpose described, and a lamp guard fitting the outer shell adjacent the reflector portion. 7

6. In a device of the class described, an outer shell of non-ferrous metal having one end formed into a light reflector having a central cavity, a lamp socket fitting Within but insulated from the Wall of the cavity and forming a contact to engage a lamp terminal, at least one resiliently mounted contact carried on an insulator Within and at the bottom of the cavity for contacting with a lamp terminal, said shell having its periphery adjacent the rim of the reflector portion drawn in to provide aseat for a lamp guard, a lamp guard fitting over but easily removable from said seat, a magnet coil and core structure positioned Within the shell and having its free edges terminating in substantially the same plane as and for the purposes described.

7. In a device of the class described, an outer shell of non-ferrous metal having one end formed into a light reflector having a central cavity, a lamp socket fitting within but insulated from the Wall. of the cavity, and forming a contact to engage a lamp terminal at least one resiliently mounted contact carried on an insulator Within and at the bottom of the cavity for contacting with a lamp terminal, a lamp guard fitting the shell adjacent the rim of the reflector portion, a magnet coil and core structure positioned Within the shell and having its free working edges terminating in a plane substantially corresponding to that of the rim of said shell and means for closing the end of the shell around the magnet structure.

8. A lamp having a one-piece shell, having one end. formed into a reflector and a cavity for carrying a lamp socket, a lamp bulb socket positioned Within but insulated from the Wall of the cavity, means besides the socket carried Within the cavity for making contact with the lamp bulb a guard fitting over but easily removable from the reflector end of the shell and means Within the shell for retaining the lamp against any object of magnetic material comprising, a magnet coil and core structure, the latter having its engaging surfaces substantially in the same plane, said magnet coil and lamp bulb being adapted to be connected in parallel With a suitable source of current.

9. A lamp having a one piece shell, having one end formed into a reflector and a cavity for carrying a lamp socket, a lamp bulb socket positioned Within but insulated from the Wall of the cavity, means besides the socket carried Within the cavity for making contact with the lamp bulb, a guard fitting over but easily removable from the reflector end of the shell, said guard having openings therein separated by ribs and a reflecting portion opposite said ribs and means within the shell for retaining the lamp against any object of magnetic material comprising a magnet coil and core structure, the latter having its engaging surfaces substantially in the same plane, as and for the purpose described.

10. A lamp having a two-piece shell, one of said pieces being formed at one end into a refiector With means at the center of the reflector for mounting a lamp socket, the second piece being formed into a lamp guard fitting the first piece around the reflector portion; said guard piece having a part formed into a refiector, Which is positioned substantially at right angles to the shell reflector, and having light emitting openings adjacent the reflector portion, and a central light opening in the end opposite to the shell reflector; and electromagnetic means carried Within the first mentioned piece for supporting the lamp when the lamp is placed against a member of magnetic material and current is connected to the lamp terminals.

In testimony whereof I affix my signature.

ALFRED 0. DE LORME. 

